Valve and head for gas engines



Filed DeGA. l. 1926 ll/L-A- VALVE AND HEAD FOR GAS ENGINES April s, 1930.

April S, 1930. A. c, HoEcKER '1,753,515

I VALVE AND HEAD FOR GAS ENGINES Filed Dec. 1, 192e 2 sums-sheet 2 wmf Patented Apr. 8, 1930 UNITED STATES VALVE AND HEAD FOR Gas ENGINES Application led December 1, 1926. vSerial No. 151,836.

My invention relates to improvements in gas engine valves and cylinder heads and the main object of the invention is to provide a cylinder head with inlet and exhaust ports, a reciprocating slide valve for each of said ports, each valve comprising a cylindrical segment, a valve stem connected to each of the valves the stem extending through the ports, and through the head of the cylinder.

Another object of the invention is to provide means which will hold the valves against the seats so that the valves will he practically self-grinding and at the same time prevent leakage het-Ween the valve and seat.

Another object of the invention is to place the valve stems in the ports or free from the interior of the cylinder, thus eliminating leakage of the compression charge past the valve stem.

Another object is to so construct the valves and stems so that the valves may he operated with the usual overhead valve gearing such as is employed in Buick or other cars.

Further objects and advantages of the'in-l vention will he set forth in the detailedv description which follows.

In the accompanying drawings: Fig; l is a fragmentary vertical central section through the cylinder ofan engine constructed in accordance with my invention. F 2 is a fragmentary horizontal section on line 2 2 in Fig. l, looking in the direction of the arrows.

Fig. 3 is a perspective View of the removable assembly head which acts as a guide for the valves.

Fig. 4 is a side view. of Fig. 3. a

Fig. 5 is a side view of the assembly head Vwith valves bearing plates and springs assemhled.

Fig. 6 is a view of one of the valves.

Fig. 7 is a sectional view of one of the ports and valve looking through the ports.

Like numerals designate corresponding parts throughout the several figures of the drawings.

In the drawings, l is the cylinder, and the Vhead ll has ports 2-2 cut circumferentially around and through the wall thereof, which are in communication with manifolds PATENT oFFdlcfE'n 2 2. Directly over these ports there are two cylindrical segmental sliding valves 3 3. Each of these valves has a valve stem 4 welded or otherwise secured thereto. VThese stems 4 extend through the inlet and exhaust ports and through the head and valve guides 5 5. Over the guides and valve stemsthere are two springs 7 7. At the top of the valve stem there is an openingl for the receptionv of a pin or key. Belowtheopeningsis af wash` er. The springs, key and` Washer hold the valves closed while the charge is under compression. In the center of the valves is an assembly head 8 circumferentially around the head and between "the .valves are tWO coiled springsk 9 9 and fourl bearing plates 10. These spring bearing plates and head hold the valves firmly against the ports y2 2. The vhead 8 is detachable `and holted to the cylinder: head.

In placing the valve in the head lthe valve stem guidesy `5 5 are screwed out Y fof the threaded socket,` the valves arethen placed in the head as shown in the dottediline's Fig. 1. After thevalves are lined parallel with the wallsof. the cylinder or head and the guides 5 are screwed .in the sockets, the springs are then placed over therfg'uides 5 5 and over the stem; a kwasher isthen placed over the stem; and over the springs; a key is then placed throughv the stem which will hold the valve in operating position. Tohold the valves against the` valveseats, `I provide a cylindrical' head as shown in Figs.`3 4 5. The head has two circular grooves.` In these grooves arejtwo coiled springs 9 9. `Longitudinally with the'head and at the ends of the springs there are four hearing plates 10, that is, there are two hearing plates at each sideof the head as shown in Fig. 2; The plates l0 are held in the head as shownin Fig. 5. These plates act as guides for the ,valves at the same time as the springs 9 9 hear againstthe plates 10. Therewillhe a certain amount of pressure .on the longitudi# t nal end of the valves. 'Ihe pressure ofthe plates and springs will always cause the valve to he firmly seated. Thev head 8 also acts as an assembly head for the springs and plates l0.l It also acts as a guide for the valve. vThe head 8 has an openingon each side as shown in Fig. 3 and Fig. 4. These openings are for intake and exhaust and are lined With the intake and-exhaust ports of the cylinder head.

In assembling the head and valves the valves are first placed in the cylinder head as shown in Fig. l. 'Ihe` valve is started through the, ports as shown inl the dotted lines. The springs 9 and plates lO are placed in the assembly head 8. The head 8, plates 10, and springs 9 are then placed in the center of the valves. The openings of the assembly head 8 are lined With the ports in the'cylinder head. The complete assembly head is then bolted to the cylinder head 11 by bolts 12--1-2- as shown in Fig. 1.

It will not be necessary to explain the operation of the. valves as the valves reciprocate or operate the same as the usual poppet valves. However, as an illustration, Fig. 1 shows one valve open'vvhilel the other valve is closed.

What I claim is:

1. In. a gas engine comprising a clyinder withV a; cylindrical head provided With inlet and exhaust ports, a cylindrical, segmental valve for each of said ports, said valves having; a stem permanently attached thereto and said valves being of less circumference than the circumference of the inside of the cylim derk so that While the stem and valve may be iny one; piece the stemmay be inserted into op* erative "position through the ports and through the. headv substantially as described.

2. In an engine comprising a cylinder head having inlet and exhaust ports; a reciprocating slidei valve for each of saidv ports, .said valves having a. valve stem connected to each of said valves, said stems extending through theports and free of the interior of the cylinder so that the compression` charge lWill not escape past the valve stems.

3. In a reciprocating engine comprising a cylindricall cylinder head having intake or exhaust ports in said head, and a cylindrical segmental valve for opening and closing said ports said valve 'having ai stem attached thereto, said stem extending through the ports 'and througha guide in the'head of said engine, said guide being in one piece and completely surrounding said valve stem.

4. In a reciprocating engine v"comprising, a cylinder head having inlet or exhaust ports and a segmental reciprocating slide valve adapted to open and close said ports and operate on the interior of the cylinder head, said valves having stems permanently conscribed.

ALBERT G. I-IOECKER.

nected thereto at right angles, said valve` Y stems passing through a one piece circumferential g-uide in the head oi' said engine.

5. In an engine comprising a cylinder having intake and exhaust ports in the Walls thereof; a sectional cylindrical valve adapted to open and close said` ports, each of said valves having 4a stem connected thereto, said 

